TCS #1024 T4X 1.3amp 4 function decoder for HO SKU: 1024 This full featured, 4 function, hardwire or harnessed decoder is a robust workhorse, capable of taking almost anything you can throw at it. Included is our auto-adjusting BEMF for outstanding slow speed performance and hassle free set up. Also includes Quiet Drive for super quiet engine performance. Dimensions: 0.661" x 0.969" x 0.217" or 16.79mm 24.61mm 5.51mm